Ughhhh my dog has been so annoying since she's gotten spayed. She's so moody now. She'll start…

Ughhhh my dog has been so annoying since she's gotten spayed. She's so moody now. She'll start growling as soon as my other dog comes in or walks around her and he's not even messing with her. He'll be playing with his toys and she'll snarl her teeth and bark at him. I love her and all but damn, she needs to chill. Hopefully her moodiness will pass